Error in Reading database of lightcoin Wallet
Publish: 2021-04-10 23:35:13
1. Keeping a backup of your wallet in a safe place can protect your wallet from computer failures and many human errors. If you encrypt your wallet, it can also be used to restore your wallet when your mobile phone or computer is stolen
back up your entire wallet
some bitcoin wallets use many hidden private keys inside. If you only back up the private key of the visible bitcoin address, most of the money may not be recovered from the backup
encrypt online backup
any online backup is easy to be stolen. Even a computer connected to the Internet is vulnerable to malware. Therefore, it is a good security habit to encrypt any backup exposed to the network
using multiple secure repositories
single point of failure is not concive to security. If your backup is not limited to only one place, it is less likely that something bad will happen and your wallet will not be restored. You can also consider using different storage media, such as USB flash disk, paper and CD-ROM.
back up your entire wallet
some bitcoin wallets use many hidden private keys inside. If you only back up the private key of the visible bitcoin address, most of the money may not be recovered from the backup
encrypt online backup
any online backup is easy to be stolen. Even a computer connected to the Internet is vulnerable to malware. Therefore, it is a good security habit to encrypt any backup exposed to the network
using multiple secure repositories
single point of failure is not concive to security. If your backup is not limited to only one place, it is less likely that something bad will happen and your wallet will not be restored. You can also consider using different storage media, such as USB flash disk, paper and CD-ROM.
2. You did not give a screenshot how to show you, ah, the wallet can not be synchronized may be caused by the following reasons:
1, the network connection is broken
2. The download is not the latest version of the wallet client. I have encountered this situation with Ruitai Coin Wallet before
3. The network speed is slower and the synchronization is slower.
1, the network connection is broken
2. The download is not the latest version of the wallet client. I have encountered this situation with Ruitai Coin Wallet before
3. The network speed is slower and the synchronization is slower.
3. I also used the address inside. Can't I get the money back? Solution!!!
4. Bitcoin cash is very secure. Bitcoin cash adopts the world's most powerful blockchain technology, and new transaction signature, which improves the security of hardware wallet and eliminates the problem of secondary hashing.
5. digital currency is abbreviated as digiccy, which is the abbreviation of "digital currency" in English. It is an alternative currency in the form of electronic currency. Both digital gold coin and cryptocurrency belong to digiccy
digital currency is a kind of unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of specific virtual communities. The European Banking authority defines virtual currency as a digital representation of value, which is not issued by the central bank or authorities, nor linked with legal currency. However, because it is accepted by the public, it can be used as a means of payment, or it can be transferred, stored or traded in electronic form.
digital currency is a kind of unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of specific virtual communities. The European Banking authority defines virtual currency as a digital representation of value, which is not issued by the central bank or authorities, nor linked with legal currency. However, because it is accepted by the public, it can be used as a means of payment, or it can be transferred, stored or traded in electronic form.
6. I'm sorry to tell you that it did disappear
7. If you want to resynchronize, you need to delete the data in the original appdata folder. Of course, the premise is that the wallet is backed up
8. Download UFIDA? Isn't it genuine
according to your description, there are several situations as follows: 1; Is the ufdata file in the wrong location
according to your description, there are several situations as follows: 1; Is the ufdata file in the wrong location
9. What I said is very clear, but the question is not clear. What kind of operation did you do
1. This error is obvious, that is, the table does not exist. But you've built a watch. It doesn't exist. It can only be a user or permission issue
2. To be specific, create table space_ Both space and Yong are right, and so are authorized connections. But after you authorize the connection, you should first withdraw the current user, then log in with your Yong user, and create a table sys under Yong user_ User, do not specify the table space data_ Because your Yong user is already associated with this table space, all tables under Yong user are in this space by default
3. If you don't build sys under Yong user_ User table, then your table is actually built under the user you started logging in with. When you visit sys under Yong user_ The user table does not exist. If you set up the table under Yong user, as long as you do not operate on the table under Yong user, you need to access it with a user name, specifically yong.sys_ user It's all a problem. The user of the table is not the same as the user you are currently in.
1. This error is obvious, that is, the table does not exist. But you've built a watch. It doesn't exist. It can only be a user or permission issue
2. To be specific, create table space_ Both space and Yong are right, and so are authorized connections. But after you authorize the connection, you should first withdraw the current user, then log in with your Yong user, and create a table sys under Yong user_ User, do not specify the table space data_ Because your Yong user is already associated with this table space, all tables under Yong user are in this space by default
3. If you don't build sys under Yong user_ User table, then your table is actually built under the user you started logging in with. When you visit sys under Yong user_ The user table does not exist. If you set up the table under Yong user, as long as you do not operate on the table under Yong user, you need to access it with a user name, specifically yong.sys_ user It's all a problem. The user of the table is not the same as the user you are currently in.
10. For example, a user's user name and password are queried in a user database, but there are special characters in the user's name and password, such as single quotation mark, "|" sign, double quotation mark or hyphen "&"
for example, his name is 1 & quot; Test, the password is a | & 900
in this case, when executing the following query statement, an error will be reported:
sql = & quot; SELECT * FROM SecurityLevel WHERE UID="& quot; & UserID & "& quot;& quot;< br />SQL = SQL & " AND PWD="& quot; & Password & "& quot;& quot;
because SQL will be like this:
select * from securitylevel where uid = & quot; 1" test" AND PWD=" A|&900"
in SQL, & quot|& quot; It's used to split fields. It's obviously wrong. Now we provide the following functions to deal with these headaches:
function replacestr (textin, ByVal searchstr as string_< br />ByVal Replacement As String, _< br />ByVal CompMode As Integer)
Dim WorkText
for example, his name is 1 & quot; Test, the password is a | & 900
in this case, when executing the following query statement, an error will be reported:
sql = & quot; SELECT * FROM SecurityLevel WHERE UID="& quot; & UserID & "& quot;& quot;< br />SQL = SQL & " AND PWD="& quot; & Password & "& quot;& quot;
because SQL will be like this:
select * from securitylevel where uid = & quot; 1" test" AND PWD=" A|&900"
in SQL, & quot|& quot; It's used to split fields. It's obviously wrong. Now we provide the following functions to deal with these headaches:
function replacestr (textin, ByVal searchstr as string_< br />ByVal Replacement As String, _< br />ByVal CompMode As Integer)
Dim WorkText
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